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Optics Letters

Optics Letters


  • Vol. 20, Iss. 19 — Oct. 1, 1995
  • pp: 1934–1936

Scattering of light by large nonspherical particles: ray-tracing approximation versus T-matrix method

Andreas Macke, Michael I. Mishchenko, Karri Muinonen, and Barbara E. Carlson  »View Author Affiliations

Optics Letters, Vol. 20, Issue 19, pp. 1934-1936 (1995)

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We report, for the first time to our knowledge, comparisons of light-scattering computations for large, randomly oriented, moderately absorbing spheroids based on the geometric-optics approximation and the exact T-matrix method. We show that in most cases the geometric-optics approximation is (much) more accurate for spheroids than for surface-equivalent spheres and can be used in phase function computations (but not in polarization computations) for nonspherical particles with size parameters as small as 60. Differences in the single-scattering albedo between geometric-optics and T-matrix results are surprisingly small, even for small size parameters.

© 1995 Optical Society of America

Original Manuscript: May 26, 1995
Published: October 1, 1995

Andreas Macke, Michael I. Mishchenko, Karri Muinonen, and Barbara E. Carlson, "Scattering of light by large nonspherical particles: ray-tracing approximation versus T-matrix method," Opt. Lett. 20, 1934-1936 (1995)

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